I was just out trying to get my 4th tank of break in done and i went through 3 quarters of a tank trying to get it started, finally got it to stay running and the low end his good, when ever it shifts into 2nd it either cuts out or dies. I tried messing with the high speed needle but nothing happens it keeps doing the same thing, this is the 4th 2.5 ive broken in and this one is giving me the most trouble.